44.In a single-slit diffraction experiment, monochromatic light of wavelength λ passes through a slit of width a, producing a diffraction pattern on a distant screen. Which of the following statements is correct?
(A) If the width of the slit changes, the diffraction pattern does not change.
(B) If the wavelength of the light changes, the diffraction pattern does not change.
(C) The diffraction pattern is dark at the center of the screen.
(D) If the slit width is doubled and the wavelength is also doubled, the positions of the dark fringes remain the same.
(E) The width of the central maximum is proportional to the slit width a.

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統計： A(0), B(0), C(0), D(1), E(0) #3847820